<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>修改商品页面</h1>
<div>
  <input type="text" placeholder="id" v-model="product.id" readonly>
  <input type="text" placeholder="标题" v-model="product.title">
  <input type="text" placeholder="价格" v-model="product.price">
  <input type="text" placeholder="库存" v-model="product.num">
  <input type="button" value="修改" @click="update()">
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
<script>
    let v = new Vue({
        el:"body>div",
        data:{
          product:{
            id:"",
            title:"",
            price:"",
            num:""
          }
        },
        methods:{
          update(){
            axios.post("/update",v.product).then(function () {
              alert("修改完成!");
              location.href = "/list.html";
            })
          }
        },
      created:function () {
          //通过地址栏中的商品id查询商品详情
        axios.get("/selectById"+location.search).then(function (response) {
          v.product = response.data;
        })
      }
    })
</script>
</body>
</html>